JP2002364542A5 - - Google Patents

Description

[0008]
According to the second aspect of the present invention, since the lubricating oil reservoir and the lubricating mechanism from the lubricating oil reservoir are not provided at the lower part of the compression mechanism (C), the conventional lubricating oil reservoir or By eliminating the oil supply mechanism having a complicated structure, the electric compressor can be made to be a simple structure that can be reduced in size, weight and cost. In the invention according to claims 3 and 4 , the inside of the closed vessel (10) is filled with the low pressure suction gas refrigerant before compression, and the discharge chamber (of the compression mechanism section (C)) becomes high pressure with the discharge gas refrigerant after compression. 25) is characterized by surrounding it with a low pressure suction gas refrigerant atmosphere.

[0012]
In the invention according to claim 5, an electric terminal (40) for supplying electric power to the motor (30) housed in the motor unit (M) is provided on the top surface side of the closed container (10), and After the external lead wire (42) is connected to the outer terminal portion (41b) of the terminal (40), the connection portion is sealed with a filler (P).

Claims (8)

A compression mechanism (C) for sucking and compressing the refrigerant, and a motor (M) for driving the compression mechanism (C) are arranged in series inside a closed container (10) in which the refrigerant flows. In the motor-driven compressor for supplying the refrigerant to the compression mechanism (C) through the motor (M),
An electric compressor characterized in that the motor unit (M) is on the top side in the vertical direction, and the compression mechanism unit (C) is on the ground side. The motor-driven compressor according to claim 1, wherein a lubricating oil reservoir and an oil feeding mechanism from the lubricating oil reservoir are not provided at a lower portion of the compression mechanism (C). The inside of the closed container (10) is filled with the low pressure suction gas refrigerant before compression, and in the compression mechanism (C), the discharge chamber (25) which becomes high pressure with the discharge gas refrigerant after compression, the low pressure suction gas refrigerant The electric compressor according to any one of claims 1 to 2, wherein the electric compressor is configured to be surrounded by an atmosphere. The inside of the closed container (10) is filled with the low pressure suction gas refrigerant before compression, and in the compression mechanism (C), the discharge chamber (25) which becomes high pressure with the discharge gas refrigerant after compression, the low pressure suction gas refrigerant An electric compressor characterized by being surrounded by an atmosphere. An electrical terminal portion (40) for supplying power to the motor (30) housed in the motor portion (M) is provided on the top surface side of the sealed container (10), and an electrical terminal portion (40) of the electrical terminal (40). The electric compression according to any one of claims 1 to 2, characterized in that after connecting the outer lead wire (42) to the outer terminal portion (41b), the connection portion is sealed with a filler (P). Machine. The motor-driven compressor according to any one of claims 1 to 5, wherein the compression mechanism (C) is a scroll compressor. The refrigerant to be compressed is a refrigerant that flows in a refrigeration cycle, and the pressure of the refrigerant after being compressed is set to a level higher than the critical pressure of the refrigerant. The electric compressor according to any one of claims 6 to 10. The electric compressor according to claim 7, wherein carbon dioxide is used as the refrigerant.